possible to measure with REW applying the filters?

[germanicus]

I'm using REW to generate filter impulse responses which I will feed to Inguz (a plugin for slimserver that applies filters and then sends the resulting file to a squeezebox). So the equalization is being done on my computer, not by an external equalizer.

I'd like to check how much improvement the filters I'm generating are making. is there any way I can have REW measure the speakers, but using a filtered sweep? In other words, can REW convolve the sweep with the filter impulse response and send that to the sound card, so that I can compare the predicted to the actual response?

If that's not currently possible, could I request it as a potential feature to be added? It would be very useful for anyone doing PC-based audio.

Thanks in advance!

[JohnM]

It is already on the list for consideration. A slightly awkward aspect is that, for people with an equaliser in the path to their subwoofer, sending a filtered sweep is not the same as the effect of their EQ unit if they measure a main speaker or sub+main, though it is valid for measuring the sub alone.

[germanicus]

JohnM wrote:

It is already on the list for consideration. A slightly awkward aspect is that, for people with an equaliser in the path to their subwoofer, sending a filtered sweep is not the same as the effect of their EQ unit if they measure a main speaker or sub+main, though it is valid for measuring the sub alone.

Thanks for the response.

I know there are a fair number of other folks using REW to generate correction filters for Inguz, and for all of us it would be great (kind of essential, actually, since otherwise we have no good way to measure how well it's working). There are probably even more people using a soundcard directly as a music source; same deal for them. And I guess it would serve as a sanity check for those with external equalizers. So I think such a feature would add quite a bit of useful functionality to REW.